Detaching motion



v s. HELLAND 2,382,48l

DETACHING MOTION Filed May 16, 1942 2 Sheets-Sheej All-go 1945- s. H. HLLAND 2,382,48 1

DETACHING MOTIONI Filed May 1.6, 1942 2 Sheets-Sheet -2 INVENTOR Patented Aug. 14, 1945 Whitin' Machine Works, Whitinsville, Mass., a corporation of Massachusetts Application May 16, 1942, Serial No. 443,299

8 Claims.

The object is the simplification of detaching motions for Heilman type combers in which the detaching and piecing mechanism operates alternately, forward and backward, to effect theldetaching and piecing of the sliver. The invention resides in a system of intermittent or Geneva gear couples combined in such away as to be capable of transmitting the required drive to the detaching rolls directly from the comb cylinder shaft,-or any other shaft, with a minimum of associated gearing, a total of only three spur gears being all required in the ordinary case, and no differential gearing being employed in any event. In consequence of such simplification, the entire system can be most compactly organized in the comber, either under the sliver table or in the driving head enclosure, and the intermittent couples can be housed to work in an oil bath casing also of small dimensions, while in addition,

the organization of the driven and driving members of the two couples adapts the detaching mechanism to be run at sustained speeds in excess of one hundred nips per minute,cand without tendency to become noisy from wear. The principles of this organization are exemplified in the structure shown in the accompanying drawings, but withoutlimitation to such or any particular form. i

Fig. 1 is a side elevation of the whole unit, parts being in section; v Fig. 2 is a top plan with the casingcover removed; and u Figs. 3, 4, 5 and 6 represent four successivo positions of the Geneva couples as assumed through one combing cycle, all taken on line II-Il of Fig. 2 and looking in the direction of the arrow. w v

It will be understood that the comb cylinder shaft, marked I, is driven in any suitable way, not shown, and extends from the drive-head at one end of the comber through the row of comberheadsand carries the respective comb cylinders ior such heads, and that, the detaching roll shaft. marked 2, also extends from the drive-head through all of the comber-headswherein it forms front roll shaft being driven from the back roll shaft by means of an intermediate long-tooth idler 5 engaging both, this being a usual construction.

It will be understood also that according to the conventional combining operation the forward end of a periodically advanced lap, of cotton or other fiber, after being combed by the comb cylinder is presented to the back detaching rolls 3 and 4. These rolls then rotate forwardly so as to detach, the tuft from the 1ap. They then rotate reversely so as to extend the rear. end of the tuft rearwardly to a less extent than the forward rotation to have the head end of the next following tuft overlapped uponz it, in the next cycle, thus accomplishing thevpiecing action, all of this being the customary pperation of combing machines of this type and not illustrated on this account. The backward rotation in the present case is exactlyhalf of the 'forward rotation but can be made any fraction by appropriate change of design, and as ;willpresently appear. I

The back detaching roll shaft Zis driven by its pinion 6 from a spur gear T fast on a lay shaft 8 journalled in the casing of the unit. Suchcasing can be mounted on any appropriate bracket or support and is intended to hold a body of lubricant. Within this casingthe shaft &carries fast upon it the driven orstarwheel element a of a Genevacouple, andit is by this couple that the detaching roll shaft ;is driven in itsforward direction. Also within ;the casing the; shaft 8 carries fast uponit-a spur gear u meshing with a pinion Il journalled on a stud l2 fixed-in the side wall of the casing.. Thispinionis compounded withthe driven or star-wheel member !3 of the second` Geneve. couple, the function of which is to drive the shaft 8 in the direction that rotates the detaching rollshaft 2 in the reverse direction, p v

Both star-wheel elements are thus geared to eachother so that rotationof one rotates the other, and rotation of eitherrotates the detaching roll shaft independently of the other and both are enclosed in the casing, facing each other, that is to say, one is adjacent one :sideof the casing, and the other adjacent to the opposite side, with a space between' them. V I r The driving means for both star-wheel members operates in the'spacebetween them and is represented in the present case 'by a sleeve M which' is keyed or otherwise fixed upon the' comb cylinder shaft I, and carries two crank arms and a looking segment !1. The longer arm carries the Geneva driver-stud I5 (and roller) for the star-wheel member. &and the shorter arm carries the corresponding Geneva stud 16.::(and roller) for the other star-wheel I3., The studs point in opposite directionsfrom their respective arms and are adaptedfor entering the radial slots in their respective star-wheels thus to turn them, as customary in Geneva couples. The two arms engage their wheels in alternation and are so angularly related that when one is actively engaged with its star-wheel, the other one is disengaged from its star-wheel. The looking 5 segment IT, constituting part of the control means of the forward-driving star-wheel is adaptedtoenter. and lock with thesegmental notches,|8 .formed in the rim of the star-wheel- 9, to hold it against rotation, and is of such length and angular position on the sleeve IA that it enters cne of said notches at the moment the long arm stud !5 leaves or disengages itself from one of its star-wheel s1ot4Sha. .in8. ,QmDltr 4 ed its turning action thereongthat is...to .sast 15,'.

having turned the star-wheel 9 forwardly to tl e.:` extent required for the forward rotation of the detaching roll shaft, the segment -then-1ccks-- that star-wheel against any tendency ;toro tatefrom any causeor reaction. Unlike other Geneve-couple& howeventhe segment :H is larmiately short^ androtates out of its notch beforethe` driver; studl 5-` again :comes into :action so that* the- -star-whee1--9; is then unlocke'd. This ocurs ;at-'the 'moment the other driver studl s enteri r-` its star-whel and during -the unlocked peri dthe latter-studhas control. Its'action on itsstar-wheel is to rotatethe sharft-8 and-henes the detaching-;roll shaft in" thereverse direction. Italso' r'itates the -unlocked star-wheel& 'reversely ;andto' just the extent required -tobring one of--its' 'radial slots in line v with the path 'ofstud I 5 so`-that -th letter can entersuch slot. This Genevamernber* I 8-; `has-no' looking segment.

'I'he-sequence of ^positions is indicatedin Figs; 3-6. Fig. -3;"shqws thefiorward driving stud; |5 atthe -point-ofenterir g-one ofthe Slots; or channels-of its forward -driv-ing star-wheel 9. This is atth'e beginning of `the forwarl detaching roll rctatipr'` 'andattliis instant -the reversedriving stud I 6 'is on the-point-of ;leaving its :slot in the reverse-drivingtar-whel 13:

In Fig. 5 the stud l 5 has completed its action on its star-wheele', beingonth' pointof leaving the slot thereof, andthe looking segment," has entered' one of'the-rimmotches;148.: ,It `;i thus holdingboth star-wheels 'stationary and' of course'th detacl iing nechariisrng- This dwell` of the detachingmchanism; as` will be' seen 0 occurs at the end-of the forward -stroke, as customary, and continues until-'the segment l1 leaves its notch."

Fig: 6 shows' the partsat th s-ins tant. The short arm stud l is now' entering one of the Slots in its reverse-driving-star-wheel la and about to rotate the latter in the direction indi cated by the arrowin Fig.= 6;.;'whichas stated reversely rotates the shaft &and the parts geared to it bringing-the parts back^to-the position of Fi8.'3. 7 i

In the present casethe star-wheels areeach' rotated a. quarter turn bythen-'respective driver studs, and by virtue otthe -2-to1 ratio ofgear o and II :this results in-a%weverse-rotation 'marked-b in that figure atthegend oi the reverse rotation, being at such time correctly placed to receive the stud 15 on its next arrival, as indiated by Fig. 6. In like manner the channel of the -other star-wheel l3 marked d in Fig. 3 makes oneehalf, revolution, during the forward ,action`assuning,the position indicated in Fig. 5 attheend of.. such action, which places it in readiness to receive its stud !6. After that stud hasa acted upon-xit it occupies the position of channel e in Fig. 3.

` I claim:

1. :Ini a textile' :comber thecombin'ation of: the comb shaft; the :detachingroll shaft and detach ingnmotionzdor c'onnecting the' detaching roll sh'aft to the' comb cylindershaft comprising; two Geneva couples. having separate driven starwheel membe'rs; acasingrenclosing said couples andintoz which said comb cylindershaft extends; a lay shai't also in: said asing the driven 'members ofsuchcouples being operatively connected to 'said-:lay shaftwithi'n said casing anid-` a'-` gear on said lay shatt outside of: said casing operatively connectingit 'to' said detaching' rol*1"sha`tt, the driving membersbf: such couplesbeingmounted oni-thecomb' 'cyli'nder shaft within said casing and ada'pted -to`r alternately engaging said driven members for rtating said lay sha ft' backwardly and a-xgreater distance forwardly on-each' rotatiomof said comb shaft 2& "In' a textile comber; -thecombination with i a driveshafhand' a detaching roll shatt, of a' detaching motin for advancing said roll shatt with an alternating motion, comprising gearing-intermediate -of-' and i connecting -said' shafts including the twm-sta'r-wheel members of two Geneve conples said -star'-wheel me mbers being mounted in" positions -faci n'geach other -and' means on the drive shft mounte'd to work ir'rthe space between said two star-wheel members, for.eng aging and driving th'emin alternatlon 3. In a textileconben the combination, with a como shft'and-a detaching roll'shait, of a de taching motion for alternatelvorwardy oteting saiddeta'ching roll shaft .and backwardy. ro: tatingitto 'a less extent, comprisingtwo Geneve cowples having their 'starrwheeI members geared together in one-to-two ratio and Iacing each other and both connected to drivesaid detaching 'roll 'shani-ia Geneva-stud 'for rotatingone oftsaid stabwheel members ,in one direction, a Geneva stud ior rotating both said,star-.w heel members in --theg opposite direction and adrive-head on said{c'ojbshai't''carrying said stud n 1ember,$ for said starwheels in the flsp ace between them ,and adapted for alternately driving them,

" 4. -Irr'a cpmber the' combination withthe comb sha-ftg'and the detaching rollshaft ofadetach ing motionj for advancinglsaid roll shaft. !With a rw d n rd on omprisnz ,two Geneve." couples having their star-wheel ,meme rs geared together, a driving and .controlling member -for oneof said sta wheel members comprising'a Genev'a, 'stud 'and a locking segment, a driving member for the Qtherstar-,wheeLmembe c mp ii gaq n r tud btno lock g. eg: nentj'means on said co'mb shatt for revolvlng said studs alternately into engagement with their respective star-wheel members, and a gear conneoting said members to the detaching roll shaft.

5. The combination in a textiie comber with a comb shaft and a detaching roll shaft of a detashing motion for alternately forwardly and backwardly 'otatin g the detaching roll shaft comprising two geneva couples having their star-wheel members geared together, both being geared to said detaching roll shaft, a Geneva. stud and looking segment for controlling one of said starwheel members, a Geneva stud but no looking segment for controlling the other and a rotary drive head on said comb shaft carrying said studs and revolving them into alternate engagement with their respective star-wheel members.

6. In a comber the combination with the comb shaft and detaching roll shaft, of a detaching motion for driving the latter shaft comprising two Geneva couples, two-to-one gearing between the star-wheel member of one of said couples and the star-wheel member 'of the other couple, both said members being geared to said roll shaft, Geneve. studs for said members, means for rotating said studs in the same direction and into alternate driving engagement with their respective star-wheels, said studs being so angularly related to each other that as each leaves its starwheel slot, the slot of the' other star-wheel member is in position to receive the other stud, and a connecting gear between said star-wheel members and the detaching roll shait.

7. In a comber the combination of a rotary comb cylinder shaft, a detaching roli shaft and a detaching motion connecting the latter shaft to the comb cylinder shaft as its source of power and comprising two star-wheel members both constantly in geared driving connection with said detaching roll shaft for respectively rotating it in opposite directions and a pair of arms fast on the comb cylinder shaft carrying driver studs respectively cooperating with said star-wheel members to impart a greater forward than backward rotation to said roll shaft.

8. In a textile comber, the combination with a comb shaft and a detaching roll shaft, of a detaching motion for alternately forwardly rotating said detaching roll shaft and backwardly rotating it to a less extent, comprising two radiallyslotted star-wheel members geared together and' to said detaching roll shaft, and two driver studs for respectively engaging the slots of said members for rotating them, said studs being carried by the comb shaft and angularly spaced thereon to engage their respective star-wheel slots in alternation, and a looking segment on said comb shaft engaging one of said members in the interval when neither of said studs is engaged therewith.

SIGURD H. HELLAND. 

